I can guaran-damn-tee you that you'd be wrong. I'm a big fan of the cosmos I mean really, this guy broke hearts all over the world by telling them Pluto isn't a planet. If you missed the show with him arguing with a bunch of 3rd graders you should look it up.
I saw some of his video from the 102 Minutes 9/11 movie. After that I read his first-hand account. Much more human and not so much scientist. http://www.haydenplanetarium.org/tyson/read/2001/09/12/the-horror-the-horror
Fuck no. I don't have a twitter account and I wouldn't be bothered to follow anyone. I occasionally read or come across a Tweet that is timely or comical but "following" another human being?